Relay.



C. A. SIMPSON.

RELAY.

APPLICATION FILED JUNE 2.1910.

2 SHEETS-SHEET 1.

1,141,982. Patent ed June 8, 1915.

M6 W Mar/53125272405022.

wvmsa gogm C. A. SIMPSON,

RELAY.

APPLICATION FILED JUNE 2,1910. 1,141,982. Patented June 8, 1915.

2 SHEETS-SHEET 2.

STATES cHA'RLEs A. smrson, or CHICAGO, ILLInoIs, Ass Ienos rro KE LQG SWITCHBOARD AND SUPPLY COMPANY? or onxcaco, ILLINOIS, a ooaronarron or ILL NOIS.

RELAY.

Toal l whom. itwtay concern Be It known thatIQ'C HARLES A. SIMPSON,

a citizen of the United States of America,- residing in Chicago, county ofCook, and

State of Illinois, have inventedcertain new and useful Improvements in Relays, of

which the following is a specification.

, invention relates to relays and more particularly to relays used in telephone" systems and arranged in pairs, whereby-one relay of a; pair is actuated to display nala'ncl* ;t'hereafter the other relay of the pai -is actuated to efi'ace the signal, orif the'signal is not displayed even though the r signal-displaying relay is thereafter actuated. \Vhere such a pairof relays are used as line and cut-,oif relays, it is necessary for,

I the line relay which usually COI1t 10lS' the 1 The object of my invention is to'provide such a pair of relays "mechan cally and elecg .to perform the func- .is a, modification. of the struc't-ure shown in" Fig. 7 1s a local battery, telephone system usingthe relay of my invention; Fig. '8 isv a line circuit for a common battery. tele-l' phone system usingltherelay of my mven tio'n.

I Fi 1,.2 nd. 3,; p'air ofelectro nagnets ll view ofthe structure spring display of the signal to operate *through the resistance .of the line, and I have found the relayof my invention to be very sensitive soar; to operate over lines of thirty-four thousand 'ohms which is especially desirable when used in connection with long'lines such as'tolljlines; While the cut-oil relay which controls the efilacement ofnthe signal-- is ,usually'operatedover a local circuit.

trically cooperating g tions stated above, the sa d relays being simple of construction, 'and very, efficient in operation.

' I Referring to the accompanying drawings- "in which-like reference characters refer to Referring now ,to the. relay shown in "and 2 are shown secured; to the. nountingplate 3. he'pole-pieces :9 are secured; '1;-

Specification of Letters Patent.

a sigthe. buffer .20

per edgeof the armature said armature 8-to retract. When the arand Fig. (ishows' the ofthe two. sets of? Patented June 8,1915.

Application filed June 2, 1910. Serial No. 564,563.

gtotheir respective cores 6 and 7 and mounting plate 3. The armature 8 is pivotally connected to the bracket 9below the core 6, the sald'bracket being screwed tothe spool ture 8 by gravity. The adjustable stop-nut 12 limits the retraction of the armature 8.

Securedto the top, ofthe pole piece 4 are the contact springs 13. and 1 1, the spring 13 resting under tension and engaging the upperfree edge of the armature 8 by means of the-catch 13'. Secured to the pole piece 5 are two sets of contact springs 15 and 16,

the. said sets each comprising two springs 1. and 18. as shown in Fig. 6. The said contacts which are normally closed are adapted to be opened. the upper springs bemg moved to theiralternate position by the armature 19, the said armature 19 being adapted to rock on the upper edge of the pole piece 5. The arm is secured to the armature 19 by, the screws 21, the said membar-extending below the contact'spr'ing 13 and being adapted to lift the said spring 13 to return said spring to its normal position after the armature 8 has been attracted. The operation of therelay shown in Figs. 1, 2 and 3 is as fol'lowsgThe armature 8.

l is attracted, allowing the spring 13 to move to its alternate posit-ion, contacting with the springlel, the catch. 13 dropping and engaging the armature 8 to hold it in its at tracted position. To again open the contacts of the springs 13 and 145 the armature 1-9 is attracted, moving the arm 20 upward, thereby engaging the spring springs 13 and )free. of the up- 8, allowing'the 13., opening the contacts of 14: and lifting the catch' 13' -moves the contact springs15 and 16 to their alternate; position: holding them; thus while 1 the said armature .19; remains attracted.

bvious tliat iiifrithe;armature 19 is 105 fii-stjactuated thei 20i moves :upward, en- I r gaging the contact sprin'galix and holding iii itsrsnormal position head 10 of the electromagnet 1. The block 1111s fastened to'the armature 8, the said block 11 being. adapted to retract the armaeven though the armature 8. be i attracted while the said armature 19 remains attr ck Referring now tothe relay shown in Figs.

4:, 5 and6, the electromagnets 25 and 26 with their respective pole-pieces 27 and 28 are secured to the mounting plate 29 by the nuts- 30.- The armature 31 rocks at the upper edge of the pole piece 28 and when attracted to the core' 32, moves the extension 33 upward against the tension of the spring 3-1.

' The said armature 31 is held close-to the pole piece 28 by' the adjustable nut 42. The

arm 35 is secured to the armature 31 by means of the screws '35, the part of the 'arm 35 extendingab'ove the rocking edge, moving toward the right when the armature 31 is attracted. The armature 36 rocks on the upper edge of the pole piece 27 in a manner similar to that of armatures 31 and 19, the said armature 36 being held close to the pole piece 27 by the adjustable nut 37.

mounted on the pole piece 27, the spring 38 fao normally resting under tension in' engagement with the catch end 10 of the arm 35, the said spring 38 being held in its normal position by this engagement.

, The operation of the relay of Figs. 4, 5 and dis as follows: The armature 31 is attracted by the electroma'gnet 26, moving the catch 10 of the arm 35 out of engagement with'the contact spring 38, allowing the said spring 38 to move to its alternate position to contact with the spring 39, and locking the armature 31 in its attracted position. To restore the contact spring 38, the electromagnet 25 is now energized, attracting "the armature 36 and the buffer 41 engages the contact spring 38, moving it upward to its normal position out of engagement with the contact spring 39. This allows the armature 31 toretract, the catch lO-thereby again moving to a point below the contact spring 33 and when the armature 36 retracts the the contact spring 39, as shown in Fig. 4.

By the attraction of the armature 36, the

" contact springs 17 and 17 are moved to their alternate position, being held out of engagement with their respective contact springs 18 and 18 until the armature 36 is again retracted. Should the armature 36 be first attracted, the spring 38 will be held in its normal position, while the said armature 36 remains attracted, so that even if the armature 31 is attracted while the armature Referring now to Fig. 7, A is a wellknown form of local battery subscribers telephone set having aswitch-h'oolt 5.0, the hand-generator 5,1 and customary receiver,

induction coil, transmitter, local battery and call bell. The said telephone at A is;con-' nected to the eXchangeby-the' line limbs 52 and terminating in the spring jacks J..-

Asso'ciated with the line of subscriber at A is the magnet LR, magnet CO and the lamp signal L, the magnets being a diagrammatic representation of the relay of my invention. The subscribers telephone at B includes the same apparatus as that shown in connection with the subscriber at A, i being connected in the exchange to apparatus-similar to that shown in connection with the line of the subscriber at A and having the samere'ference characters, but having the exponent. thereafter. The cord circuit of Fig. 7

0 connected to-the jacks J 2 by the line limbs 57 and .58. Associated with the saidli'iie is the line lamp 59, the magnet LR and CO the said magnets being a diagrammatic representation of the relay-of Figs.'1, 2, and 3 or of Figs. 4, 5 and 6. i

Referring now to Fig. 7, the operation of the system shown therein is as follows The subscriber at A operates the hand generator 51, closing a circuit through the relay LR from one pole of the said generator, through alternate contact 60, normal contact of switch-liook 50, line limb 53, normal contact 15 of relay CO, the winding of relay LR, normal conta'ct16, line limb 52 to the other pole of the said hand generator 51. This circuit energizes magnet LR attracting the armature 8 and thereby allowing the-spring 13 to contact with the spring 14, closingthe circuit from ground through contacts 13, 1:1. lin lamp L to battery, lighting the said lamp and attracting the attention of the operator. The armature 8 is now held in its attracted position due to the spring 13' dropping down and engaging the said armature 8. After-operating the hand generator the subscriber at A removes his receiver from its SWltCll-hOOk-WlllCh moves upward closing the upper contacts and the 'switchehook. The operator now inserts the plug P in the ack J closing a circuit from battery through plug sleeve 61, jack sleeve 62, the

winding of relay CO: to ground, energizing the said relay and openingthe contacts 15 and 16, also lifting the arm 20 which err gages the spring 13 and lifting the said spring out of contact with the spring 14 and efi'acing the line lamp L. The spring 13 in rising is disengaged from the armature 8 which retracts. Thecontacts 63 and 64 of the plug 1? engage respectively the contacts 65 and ()6 of the jack J extending the conductors of the cord circuit to the telephone of the calling subscriber at A. The opera- -tor now momentarily closes the contacts of the listening key K to ascertain the number of the subscriber desired. I Assuming that the subscriber at A desires connection with the subscriberat B, the op-v, erator touches the tip 72 of the plug P to the sleeve 62 ofone of the multiple iacks J and if the line of the telephone B is busy, there will be a potential above that of ground, on the said sleeve 62 and'a circuit'. will be traced from ground at the said sleeve, through tip 72, normal contact 68, the winding of relay 54 to'ground, energizing the said relay and closing a circuit through the tertiary winding of the operators induction coil from ground at alternate contact 67, through the said winding to battery. This causes a click in the operators receiver and notifies the operator that the line of the desired subscriber is busy. Assuming that the said called for line is idle, there will be no potential above that of ground on the sl'eeve 62 and therefore the relay 5% will fail to energize when the tip 72 of the plug P is touched against the sleeve 62 of the jack J. The operator now inserts the plug P into a jack J energizing the relays 69 and CO: over a path traced from battery through the winding of the said relay 69, the plug sleeve 70, jack sleeve 62, the winding of magnet CO to ground, energizing said relays 69 and Ci The oncrgization of the magnet CO" disconnects the magnrt ll 1' from the line of the called subscriber at B and the energization of the relay (39 disconnects the test relay 54 from the tip 72 of the plug P and connecting the said tip 72 to the upper talking strand of the cord circuit and extending the connection from the subscriber at A to the sub-- scriber at B. The operator now closes the contactsof the ringing keyR closing a circuit from one pole of the alternating generator G, alternate contact 68, plug tip contact '72, jack contact (55, line limb 52,the call bell oi the subscriber at B, normal contact switch hook 50, line limb-53, jack contact (36, plug contact 73, to ground at the ringing hey R. The subscriber, at in response to the said signal ,remo es h s receiver from its switclnhopk diseo p ecting the bell and hand,. generatc roign tl ig line Y and closing the uppercontacts of th ,s vitc li hook, thereby closing the circuit through t1 transmitter, battery and primary uvrndit oi?- the induction coil and closing the ag liinbs through the secondary of the induc to the other pole of the generator 5.

he suhscrihers at A and in a conversational being "traced over t throu h densers 5) a pine suhsci finished conversation, now their recaivers upon their respective hooks, and thereafter operate erators for disconnection. i the hand generator 61 of no w I the marhe f or an it closes a circuit oi? alternating current through. the coil of the cord. circuit traced over the following pats: rro-m one pole of the hand generator 51, alternate contact (30, normal contact of the switchhoo-h 56, line "30 limb 53, contact 55, 63, conductor 74, through the winding of tie said magnet '23, I conductor 75, contact 64%, 66, line limb 52 current energizes the magnet a tr the armature 7G, and allowing the spr to move to its alternate position and c with the spring '38. This closes a through the supervisory lamp sign from ground through contact 7?, 79:, the said lamp signal 55 to battery, lighting the said lamp The armature 76 is held in. its attracted position due to the spring 77 moving downward and. engaging the said armature.

The operation of the hand a of the called subscriber at ac'wae magnet 79 by current traced over the ing path: from one pole of the alternating generator :31, alternate contact 60'. norr, Contact of the switch-hook 50', line limb 53, contact 66, 73, conductor bt), through the winding of the said magnet '79, conductor :31, alternate contact 68, contact 72, line limb 52, to the other pole at the generator 10s This current energizes the magnet 79 attracting the armature and allowing the spring 83 to more downward to its aiternate position, contacting with the spring 84 and closing a circuit through the supervisory lamp signal 5(5from ground through eontact B3, 81-, the said supervisory lamp signal 56 to battery. lighting the said lainp. The armature 82 is held in its attracted position by the engagement of the spring 83, in a manner similar to that of the armature T6 of magnet The two lamps 55 and 56 now being lighted, the operator is notified that disconnection is desired. The operator now actuates' the key K to eiiace the two lamp signals 55 and 5G by closing a s4 winr'lings of ti said magnets 85 and 86 to battery,energizing the said magnets and attr-actiug theirrespective armatures and S9. Tlhc'attrac'tion of the armature 89 moves i he arm 90 to engage the spring I? which is in'its alternate position, and continuing in its upward movement, hits the spring 67 out. of engagement with the armature 76, opening the circuitv through the lamp at contact 77, 7S, etl'acing the said lamp signal and also allowing thearmature- 76 to retract. .The energization of the magnet 86 attracts the armature 89, thereby moving the'arm 91. into engagement with the spring .83 and the armature S9 continuing upward, the said spring 83 is moved out-of contact with the spring 84:, Opening the circuit for the lamp .56 and eliacing the said-lamp signal. The upward increment of the spring 83 also allows the armature S2 to retract. The oper-. ator now'restores the key K, opening the contact 87, thereby opening the circuit through the magnets 85 and S6 and the said magnets are now deenergized, retracting. their armatures 88 and 89,allo\\-'1ng.the'

springs T7 and S3 to again rest upon the upper edge of their rcspectlve armatures 76 and The relays AS and CS are now at normal and the lamp signals 55 and 56 are 'eflaced. The operator now withdraws the plug P from'the jack J, opening the circuit through the relay. CO, delinergizing-the said relay which restores its contacts 15 and 16 to normal and allowing the spring 13 t'o rest inengagement with the armature 8 The magnets LR and CO are now at normal.

The plug 1 is now withdrawn opening the circuit for the relays 69 and CO, de'energizing the said relays and the relay 69 retractalternate position, contacting ing its armature 68. The dei-Snergization of the relay CO restores the contacts 15 and 16 to their normal position, also allowing the spring 13" to again rest in engagement.

with the upper edge of the armature S, The two subscribers lines and the cord circuit having'now. been restored to normal, are

available for another connection. I

Referring now to'Fig. 8, a well-known formv of common battery telephone line is here illustrated, but using the relay ofmy invention in place of the ordinary cut-oil and line relays. lVhile I have shown no cord circuit for connection with the line circuit of Fig. 8, the well-knownKellogg four-relay common battery cord circuit is adapted to be used-in connection with the said line.

The operation of the system of Fig. 8 is as follows: The subscriber at C removes the IGCQlYQl 92- from its switch-hook, closing a circuit through the magnet LE from battery, through the winding of the said magnet, normal contact line limb 57, the telephone of subscriber at C, line limb 58, normal contact 93 to ground, energizing the said magnet LR and attracting the armature 94. The attraction of the said arma: ture 94: allows the'spring '95 to move to its with the spring 96 and closing a circuit through the line lamp 59 from ground through contact 95, 96 and the said lamp signal 59 to batresponds to the display of the said signal byv inserting a plug of the cord circuit referred to, into one of the jacks J the sleeve of the plug contacting with the sleeve 97, and spring 98 of the jack J closing a circuit through the magnet cO from battery at the sleeve contact of the plug, through sleeve contact 97 of jack J the winding of the said magnet CO energizing the said magnet, opening the contacts 9i, 93'and disconnecting the magnet LR froni the line of the subscriber at C. The energization of the said magnet CO moves the arm 99 upward, engaging the spring 95 and restoring it to its normal position, opening the circuit for the lamp 59, and also allowing the armature 94 to retract. The operator now ascertains the wants of the calling subscriber at C and should a connection be desired with another subscriber, the operator completes the connection in a well-known manner. After the subscriber at C has-finished conversation, a disconnect signal is received by the operator. in a well-known manner and the operator "withdraws the answering plug of the cord circuit from the jack J opening the circuit for the relay C0 The said relay is now deiinergized restoring the contacts 93, 94 to normal and the arm 99 moving downward allows the spring 95 to again rest in engagement with the upper edge of the armature 9. The line of the subscriber at C with its associated magnets CO and LE is now restored to normal and is available for another connection.

. It is to be understood that I do not wish to be 'undulylimited to the particular structure of the relays shown or to any particular application of the relays or circuit arrangement, many changes being possible without departingfrom the spirit or scope of my invention.

What I claim as new and desire to secure by Letters Patent is:

1. In a pair of electromagnets, the combination with a contact spring, of a normally retracted armature for one of the magnets, means operated by the other magnet to move and lock said contact to an alternate position, and means actuated by said armature to unlock and restore said contact, to a normal position, substantially as described.

2. In apair of elect romagnets,'thecom: bination with a contact spring, of an armature and contact springs for one of the magnets, means operated by the other magnet to move'the first said contact to an alternate position, andmeans actuated by said armature torestore said contact to a normal position and move the other contacts to an alternate position, substantially as Y described.

" 3. In a pair of electromagnets, the combination with a contact, of means adapted to be actuated by one of the magnets, whereby said contact is moved to and locked in an alternate position, and means controlled by the other magnet to prevent said first mag net from moving said contact to an alternate position if said magnet has not previously operated or to unlock and restore said contact if said first magnet ias already perated, substantially as described.

4:. In a pair of electroniagnets, the con1- bination with a contact spring, of a catch for one of said magnets adapted to hold said spring in a normal position, an armature for the other magnet liavin a member secnred thereto, means controlled oy said first ma net to operate said catch, whereby said spring is moved to an alternate position, and means controlled by said second magnet to operate its armature, w iereby said member moves said spring to its normal positioni 5. In a pair of electromagnets, the combination with a contact spring, of a catch for holding said spring in a normal position, means for operating said catch by one of said magnets whereby said spring is adapted to move to an alternate position, and means operated by the other magnet to prevent said spring from moving to an alternate position when said catch is actuat d.

6. In a relay, the COlIllBlllntlOil with a pair of electroinagnets, an armature for one of said magnets, a contact spring normally engaging said armature, means whereby the actuation of said armature will lock said spring and arn'iature in an alternate position, and means controlled by the other magnet for restoring said spring to normal to unlock said armature to permit its restorationi 7. In a eh i the combination with an electroinagnet,

if an armature for said magnet, a contact spring engaging said armature, said spring being held in its normal position by said engagement, means whereby when said armature is attracted said spring moves to and is locked in an alternate position, a second electromagnet and armature therefor having a member secured thereto for engaging said spring to unlock it when said second armature is attracted.

8. A relay comprising a pair of electromagnets, an armature for one of said magnets pivoted below the core of said magnet a contact spring mounted parallel to and on the opposite side of the core and engaging a free edge of said armature, said spring being adapted to move to an alternate .po sition when" said armature is attracted and lock said armature in said attracted position, an armature and contact springs for restoring it on the other magnet, a member extending from said second armature, the said 'IHQDJbGl enga ing said first contact spring to restore same when the said second armature is attracted.

9. In a device of the character described, the combination with a pair of electromag nets, of no 'mally retracted arn'iatures tor said magnets, a contact spring, a device operated by one of said armatnres to permit said contact spring to move and lock itself and the armature in a definite position, and means actuated by the other armature to air lock and restore said contact to its first position whereby said first armature is restored.

Signed by me at Chicago, county ct Cook, and State 0" Illinois, in the presence of two witnesses.

Hi-LRLES A. SlTd Pfa/ON.

ll itnesses Gronon E. MUELLER, hlARJORlE E. Gama. 

